Have found a few really cool places and sites recently:
http://www.imagescience.com.au - Inkjet printing onto canvas, silk and archival cotton papers.
Was looking for a place to get some artwork printed onto canvas and came across these guys. Coincidentally they're located across the street from our house! I popped over there and had a look at some samples of their printing and it's awesome. Printing is as inexpensive as $15 for an A4, and about $100 for approx 1m x 60cm (with heaps of other sizes to choose from). I'd love to get one of Pete's artworks and print it on to canvas, and then stretch it onto a frame.
http://www.thumbtackpress.com - A great place to buy small & inexpensive yet high quality prints of select artists' work (like Jeremiah Ketner - one of my favourites).
"Thumbtack Press uses a state-of-the-art 8 color archival ink jet process on a heavy bright white stock. The final print is trimmed to size and protected in an acid-free polyurethane cover before shipment in a board-backed, water resistant envelope." Sounds great to me!